Amiga Hardware Tuning: AHT EPROM/RAM Card

This device is actually a self-made hardware
project with came with a book called "Amiga Hardware Tuning". The PCB
was supplied with the book but the reader was intended to source the
components and build the card. The card can be used as a RAM disk as an
EPROM "Hard Drive" or as a non-volatile RAM disk (ie remembers contents
after power-off) as it can be powered by a NiCad battery. It supports a
maximum of 1MB of RAM. This device is auto-configurable and even
supports auto-booting.